I want to install mountain Lion on an external drive without uninstalling Maverick from my computer

When I want to get mountain Lion, apple store telles me that I have Maverick installed. How can I charge the M Lion version to install on an external drive?

You would need to download a copy from the Mac App Store or already have a copy of the installer. Then you can make a bootable USB drive using DiskMaker X (http://liondiskmaker.com). Once you created the USB disk, you can boot from that and install Mt Lion on the external drive.

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Installing Mountain Lion onto an external hard Drive

Hi
I am running snow Leoprd and what to keep this as my main OS on my internal HD due to work, I want to install Mountain Lion onto an external Hard Drive and boot and run from an external HD as opposed to my internal
I will be likely to be using a thunderbolt connection for the external HD
Has anyone had any experience with this and any tip or faults?
I will be using Logic mainly]

Works just like installing on an internal drive. Just be sure to choose the correct target before clicking on the Install button.
If you have sufficient space on your internal hard drive you could also make a partition on it in which to install Mountain Lion. This will be faster and more convenient that an external drive.

Hard drive died... How do I reinstall Mountain Lion onto an external drive?

I have Time Machine and two extra external drives but now I cannot boot from the Hard Drive to reinstall Mountain Lion. I have a recovery partition from TechTool but it does not include Time Machine or the App Store. My computer boots into the TechTool disk but my hard drive is not shown. Disk Utility does not see my hard drive either.
Any suggestions?
TIA

Sorry, I'm confused.
The recovery partition from Tech Tool, this is on the internal HD or on a CD/DVD?
Is this the same thing as the TechTool disk that your computer can boot into?
Where is the Disk Utility that cannot see your hard drive? Is it on the Apple recovery partition on your internal drive? Are you saying that Disk Utility on your Apple recovery partition cannot see your boot partition?
It sounds like your internal boot partition won't work, but the internal drive itself is OK (i.e., Disk Utility, on your Apple recovery partition, doesn't see the normal boot partition), or at least OK to the extent that the Apple Recovery partition can run.
If you install Mountain Lion on your external drive and use it as the boot drive for your computer, it will be very slow, and you won't be happy. I'd forget that idea.
Assuming I am thinking correctly about your situation, I would try to repair your HD. Your options would be:
a safe boot Mac OS X: What is Safe Boot, Safe Mode? and then disk utility
boot into single user mode and see if you can repair your hard drive Repair Your Hard Disk in Single User Mode | Everything Macintosh
internet recovery OS X: About OS X Recovery
recovery disk assisant, if you have made one already OS X Recovery Disk Assistant v1.0
If none of that works, then I'd try and wipe the entire drive and start over. I'd try to do that from internet recovery. Hopefully one of your external drives has backups on it.
If that doesn't work, then I'd replace the drive.

For some reason osx mountain lion has disappeared from my purchases and now when i want to install mountain lion on another mac with the same apple id it wants to charge me for the program even though i have already purchased it. what do i do?

for some reason osx mountain lion has disappeared from my purchases and now when i want to install mountain lion on another mac with the same apple id it wants to charge me for the program even though i have already purchased it. what do i do?

Open the Mac App Store on the other Mac and in the Quick Links sign into your account. See if the Mountain Lion purchase is among hidden apps in the iCloud area of your account info.

I want to install Mountain Lion on my 2008 iMac. My current OS is Snow Leopard 10.8.6. I've heard ML may be too much for this iMac. I would appreciate anyone's advice.

I want to install Mountain Lion on my 2008 iMac. My current OS is Snow Leopard 10.8.6 and there is 4GB RAM. I've heard ML may be too much for this iMac and may slow it down. Has anyone had any problems with this upgrade?

See > http://www.apple.com/osx/specs OS X Mountain Lion requires a Mid 2007 iMac or newer, and your iMac can run Mountain Lion without any problem. 4 GB of memory are enough for Mountain Lion, but if you are going to use heavier applications, maybe you will need more RAM
Before upgrading, you must make a Time Machine backup and/or a clone with Carbon Copy Cloner, and check that your applications are supported > http://www.roaringapps.com

I want to install Mountain Lion, but I forgot my password. How can I retrive or reset my password. I'm using Mac OS X, version 10.6.8

I want to install Mountain Lion, but I forgot my password. How can I retrive or reset my password. I'm using Mac OS X, version 10.6.8

OS X: Changing or resetting an account password

How do I install Mountain Lion on a thumb drive?

How do I install Mountain Lion on a thumb drive when my computer is running Mavericks? I downloaded the Mountain Lion installer, but when I attempt to run it I get a message that says "You cannot install OS X 10.8 on this computer." I don't want to install it on the computer, I want to install it on the thumb drive—but it won't give me a choice of drives.
The reason I want to do this is I want to be able to boot my iMac into Mountain Lion in order to test a hardware/software combination I suspect might be incompatible with Mavericks.
(Note: there are plenty of instructions online for how to create a bootable thumb drive with the Mountain Lion installer, but that's not what I want. I want to install ML on the thumb drive itself.)

Sure you have a proper installer application. When I start it I get:
Clicking on Continue, then accepting the licensing stuff, gets me to:
If you click on Show All Disks, then all mounted disks will be presented including your flash drive.
Now the above is a Mavericks installer, but it's the same for Mountain Lion.

Unable to install Mountain Lion on my hard drive

I'm trying to upgrade my early 2008 mac pro from Leopard to Mountain Lion using a bootable usb drive but I'm having trouble doing so. When I try installing mountain lion to my hard drive (Mac Drive 1) - The hard drive is greyed out and says 'you can't upgrade this version of OS X'. Yet it looks like I can install mountain lion onto my second hard drive (Mac Drive 2) for some odd reason.
Here's the details for my mac drive 1 which I'm having trouble with (I noticed the volume format is greyed out on disk utility as well).....
And here's the mac drive 2 info which I don't want to install mountain lion onto but looks like I can....
Any help would be much appreciated! Thanks a lot.

I can't answer the bad hard drive question without some guessing. Not that smart.
Do you have a bootable copy of the Mountain Lion installer?
If not download the following. The site says it will work with 10.6:
http://blog.gete.net/lion-diskmaker-us/
That program will allow you to make a bootable DVD or USB with Mountain Lion on it.
You can boot off of it, erase the disk, and then install Mountain Lion.
I think you should be able to reinstall from carbon copy cloner, but I haven't used that program. During the setup it will ask you if you want to import files, but I don't know if it can read carbon copy cloner. I know it can read a Time Machine backup.
A clean install is generally better anyway.
If you get Mountain Lion installed, not everything works like it did in 10.5/10.6. For an example, scrolling is reversed, but you can change it back to the way it is in 10.5/10.6 in System Preferences. After spending some time in System Preferences, my computer acts pretty much the way it always did.

After installing Mountain Lion doesn't external hard drives mount or stay mounted. Anybody else with this major problem?

After installing Mountain Lion doesn't external hard drives mount or stay mounted.
I have tried resetting my Mac's PRAM but the problem still remains.
Even USB memory sticks are unmounted efter a few seconds.
Anybody else with this major problem?

I have the same problem, although mine has not been solved by ESET update, finder settings, PRAM & SMC resets or anything else.
Don't get it, my external hard drive still works on both my housemates computers - one macbook pro (with snow leopard) and one dell, just not on mine with mountain lion.
Any ideas for me guys?

Since i installed mountain lion i can now no longer send photographs from aperture with outlook 2011 any help would be appreciated

As my post says I have installed Mountain Lion now if I try to send photograph from Aperture vis my Outlook 2011 mail client all I get in the sbject matter on the outlook mail is the name (file) and no attachment everything worked fine with Lion so it looks like a Mountain Lion issue

Yes I am using 3.3.2 apaerture can you let me know are you using aperture and outlook and not having any problems I was under the impresion that this was a Mountain Lion issue and may need a fix from Apple but if other people are noy having any issues then it may be a problem with my set up

How to install Mountain Lion on blank hard drive

I bought a used macbook with the understanding that the hard drive crashed and I had to completely replace it. I've bought and installed a new, blank hard drive in the macbook and I was wondering if I could purchase mountain lion from the apple store and install it on a completely blank hard drive. When I first booted it up, it takes to to a screen that asks me for my wifi password and has an icon for internet recovery. I've clicked on it and after a while it shows me a globe with a question mark and the website for apple support. Please tell me I haven't already messed it up :S

You need to install Snow Leopard or Lion first to install Mountain Lion online via Mac App Store.
http://store.apple.com/us/search/snowleopard#!

After installing Mountain Lion, why screen server does not detect photos from iPhoto?

After installing Mountain Lion, why the screen server does not detect photos from iPhoto?

I had the same problem and found the solution here:
https://discussions.apple.com/thread/3189272

Can i install os lion on an external drive

Is it possible to install OS Lion on an external Hard Drive and use that to boot up a laptop computer?
Thanks,
AS

RN,
Thanks for the link.
Regarding "homework", I am not sure what qualifies in your world but I had done a fair bit of searching for instruction upfront, installed the program, and again searched the apple database (presumably not the right keywords) when it didn't work.
Really appreciate you taking time to help.
Regards,
AS

Purchased MacBood Air. Want to install Mountain Lion to our MAC. How do you do that?

I purchased a MAcBook Air, and want to install the OSX Mountain Lion that came with it to my MAC. How do I do that?

You have to purchase Mountain Lion for the other Mac. That's because the Mountain Lion license that comes with the MacBook Air only allows you to install it in this MacBook Air.
In your other Mac, follow these steps to upgrade to Mountain Lion > http://www.apple.com/osx/how-to-upgrade Note that, if you have 10.5 or 10.4, you will have to upgrade to Snow Leopard if it's supported > http://support.apple.com/kb/sp575
Before upgrading, make a backup of your files and check that your apps are compatible > http://www.roaringapps.com

My Macbook Pro is running Leopard 10.5.8 and I want to install Mountain Lion

What are the steps for doing this?
I bought a used Macbook Pro (late 2008-2009 silveraluminum 250 GB HD model) after recently buying a new Macbook Air that I broke. My Macbook air was a 2012 and came with Mountain Lion 10.8 preinstalled (as there are no CD slots on the Air models). I do have an external hard drive and I had been using that as my time machine backup. Consequently, my entire Macintosh HD has been cloned from my Macbook Air onto my western digital external HD. However, I cannot restore from my time machine backup (external HD because it says that I do not have the same operating system currently installed on my laptop.
What do I need to upgrade to the newest Mountain Lion operating system? Do I have to buy snow leopard and then again mountain lion? That seems pretty ridiculous. Or, is it possible to just buy the mountain lion OS from the app store or buy the installation CD?
Another question, is I do not see the App store icon on my dock when I have my desktop up. How would I buy Mtn Lion if I cannot access App store. Does Leopard not have an app store app??
Please provide links where I can find necessary software updates and steps to take to get mtn lion so that I can transfer my clone HD off my external hard drive to my laptop I just bought.

First you have to get the Model Identifier from System Profiler, then make sure of it's model and RAM amount, then use Crucial.com or OtherWorld Computing and max out it's RAM capacity.
There is a 10.5 version of MacTracker here that can assist in getting the full RAM capacity of the machine, not just the amount Apple provides, and the RAM specs.
http://mactracker.ca/archive.html
Install/upgrade RAM or storage drive in Mac's
Also a machine that daed is likely got a dying boot hard drive, so you should replace that also with something like a 7,200 RPM for better performance, large storage capacity and decent price. A SSD would be price overkill for that older machine and add another level of problems enabling TRIM support etc.
Next you need the 10.6 white retail disk Apple sells online.
Next you follow this User Tip for installing 10.6 on the new drive. It is advised to Zero Erase the entire drive regardless of new or the old one.
How to erase and install Snow Leopard 10.6
Once 10.6 is installed you use the 10.5 disks to install your free iLife, then use Software Update repeatly until clear to get to 10.6.8 which provides AppStore for 10.8 install (paid).
Now comes the problem. Later OS X verisons of 10.7+ are better on MacBook Pro's Early 2011 and later, the performance drops off if you use machines earlier than 2010 models.
It's because 10.6.8 was written to be a performance oriented with a small memory footprint thus it's better in tune with the processors and graphics potential of the models in it's day.
10.7+ are fully 64 bit operating systems and require a heft bed of RAM, 4GB minimal and a lot more preferred., it's why I provided the MacTracker info so you can put the maximum RAM into the machine and a faster boot drive, with RAM it's usually MORE can be put in than Apple specifies.
If you can think you can live without 10.7+, then by all means enjoy the performance 10.6.8 gives, at least with that version of OS X you can stick with the hardware that came with the machine. For Snow Leopard Speed Freaks
I say this because a 2008/2009 machine is 5 years old and on it's deathbed far a laptops typically go, so it doesn't have much left in it. It's cooling fins are likely clogged with dust (behind the fans) it's been overheating with the previous owner, the Superdrive is likley worn out and they sold it for a good reason, like that it was going to need a lot of upgrading to bring it to 10.8 only to have 10.9 released in a few months and it will be behind again, or denied being allowed to go to 10.9 or later by Apple due to the age of the machine and unsupported graphics or other reason.
Buying that machine for 10.8+ was not a good choice because of the upgrades required and the poor CPU/GPU performance. It wil run 10.8 of course, just not as snappy as 10.6.8 will be or 10.8 was on your Macbook Air.
If you can live without iCloud, 10.6.8 has over 25% market share still and Apple is issuing security updates but they don't change the version number any longer or give new features.
By the time Apple stops issuing security updates for 10.6.8, that machine likely will be dead of another cause/hardware failure of some sort, most likely the graphics will go on it next.
So I foresee the two events accuring about the same time for you, I see spending more money on that old machine in new software for 10.8 etc., as a complete and utter waste.
If you purchased a used Early 2011 model or later, then I wouldn't have any objection and say go right to 10.8 if it has enough RAM.
OS X 10.4/10.5 need to upgrade, 10.6.8 ok still

I want to install mountain Lion on an external drive without uninstalling Maverick from my computer

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